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Gold/Mining/Energy : PEAK OIL - The New Y2K or The Beginning of the Real End? -- Ignore unavailable to you. Want to Upgrade?

To: kryptonic6 who wrote (179)	4/4/2005 10:07:59 PM
From: Mahatmabenfoo	Respond to of 1183

> unfortunately the thermodynamic deficiencies of producing > kerogen (oil shale) mean it will never have an EROEI ratio > comparable to conventional oil. For the period between 1950-70 oil had an EROEI of 40, but today it has an EROEI of 8.4 (imported oil) to 11.1 depending on the source. The energy returned on each unit of energy invested (EROEI) for "oil shale" is 1.3. - Charles ============= fe.doe.gov For limited uses, including electric power generation, oil shale can be burned directly, without further processing to liquid form. Unlike the bitumen derived from tar sand, the kerogen in oil shale is a solid that does not melt and is insoluble. (Ref. 22) To create other fuels, the kerogen must be converted from a solid to a liquid state. In general, releasing organic material from oil shale and converting it into a liquid form requires heating the shale to some 500 degrees C – in the absence of oxygen - to achieve a pyrolysis which converts the kerogen to a condensable vapor which, when cooled, becomes liquid shale oil. This process is called “retorting.” ============ ecocitybuilders.org Shale oil is, in fact, a rock that contains no oil but instead a solid organic material called kerogen. You have to mine the ore, transport it to a factory, heat it to 900 degrees, add hydrogen and then get rid of the waste, which turns out to be toxic and comes out in a greater amount than the original ore you started with. The process also requires large quantities of fresh water, another increasingly scarce and precious resource